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Displaying 3201 - 3225 of 4212

Ceramic Coatings Metrology Workshop Report

February 1, 2000
Author(s)
S J. Dapkunas
The Ceramic Coatings Metrology Workshop was held at NIST to identify the measurement needs of the various industries that manufacture and use ceramic coatings. The industrial perspectives were complemented by reviews of the scientific issues that require

Vacuum Processing Technique for Development of Primary Standard Blackbodies

June 1, 1999
Author(s)
Magdalena Navarro, Sally Bruce, B. Carol Johnson, A V. Murthy, Robert D. Saunders
Blackbody sources with nearly unity emittance that are in equilibrium with a pure freezing metal such as gold, silver, or copper are used as primary standard sources in the International Temperature Scale of 1990 (ITS-90). Recently, a facility using radio

Test Procedure Development for Residential Dishwashers

May 1, 1999
Author(s)
Natascha S. Milesi-Ferretti
It has been recognized that the current Department of Energy (DOE) dishwasher test procedure is inadequate in testing soil sensing dishwashers. As a result, DOE proposed that NIST evaluate the dishwasher test procedure as a part of their Appliance

Fire-Emulator Detector-Evaluation

October 28, 1998
Author(s)
Artur A. Chernovsky, William L. Grosshandler, Thomas G. Cleary, Michael D. Anderson
The performance of a fire detection system is determined as much by its ability to recognize correctly the non-fire state as to sense the presence of a real fire. Common fire detectors respond to particulate matter in the form of smoke from a flaming or

Dynamics of the Release of Alternate Halon Replacement Agents From Pressurized Bottles

May 11, 1993
Author(s)
William M. Pitts, Jiann C. Yang, B D. Breuel, W G. Cleveland, G. Gmurczyk
Halon 1301 has been widely employed on military and commercial aircraft for fire fighting purposes. Unfortunately, due to the deleterious effects of chlorine and bromine on stratospheric ozone, the manufacture of halon 1301 will be phased out by the end of

Structure of Inhibited Counterflowing Nonpremixed Flames

May 11, 1993
Author(s)
Anthony P. Hamins, M H. Yang, I K. Puri
Recent international agreements call for a halt to the manufacture of CF3Br (Halon 1301), a commonly used halon fire suppressant, due to its high ozone-depletion potential. Ideally, the search for replacement compounds should be guided by fundamental

Programming Interfacial Porosity and Symmetry with Escherized Colloids

February 22, 2024
Author(s)
Nathan Mahynski, Vincent K. Shen
We simultaneously design the porosity and plane symmetry of self-assembling colloidal films by using isohedral tiles to determine the location and shape of enthalpically interacting surface patches on motifs being functionalized. The symmetries of both the

Thermal Noise-Limited Laser Stabilization to an 8 mL Volume Fabry-Perot Reference Cavity with Microfabricated Mirrors

March 29, 2022
Author(s)
Charles McLemore, Naijun Jin, Megan Kelleher, James Hendrie, David Mason, Yizhi Luo, Dahyeon Lee, Peter Rakich, Scott Diddams, Franklyn Quinlan
Lasers stabilized to vacuum-gap Fabry-Perot optical reference cavities display extraordinarily low noise and high stability, with linewidths much less than 1 Hz. These lasers can expand into new applications and ubiquitous use with the development of

AbsorbanceQ: An App for Generating Absorbance Images from Brightfield Images

January 4, 2022
Author(s)
Stephen Zimmerman, Carl Simon Jr., Greta Babakhanova
The AbsorbanceQ app converts brightfield microscope images into absorbance images that can be analyzed and compared across different operators, microscopes and time. Absorbance-based measurements are comparable, which is useful when the aim is to

NEMI Tin Whisker Test Method Standards

October 12, 2021
Author(s)
I Boguslavsky, P Bush, E Kam-Lum, M Kwoka, J McCullen, K Spalding, K Vo, Maureen E. Williams
… formed under the sponsorship of the National Electronics Manufacturing Initiative (NEMI) to evaluate different …

Reversed Ethane/Ethylene Adsorption in Metal-Organic Frameworks via Introduction of Oxygen

February 1, 2020
Author(s)
Ling Yang, Wei Zhou, Hao Li, Ali Alsalme, Litao Jia, Jinping Li, Libo Li, Banglin Chen
Separation of ethane from ethylene is a very important but challenging process in the petrochemical industry. Finding an alternative method would reduce the energy needed to make the 170 million tons of ethylene manufactured worldwide each year. Adsorptive

Towards Standard Exoskeleton Test Methods for Load Handling

May 9, 2019
Author(s)
Roger V. Bostelman, Ya-Shian Li-Baboud, Ann Virts, Soocheol Yoon, Mili Shah
Exoskeletons are now being marketed by several manufacturers and yet there are currently no standard test methods to compare exoskeletons to task. The National Institute of Standards and Technology (NIST) has been a key contributor to the formation of a

Characterization of Five-Hole Probes used for Flow Measurement in Stack Emission Testing

May 16, 2018
Author(s)
Iosif Isaakovich Shinder, Aaron Johnson, Michael R. Moldover, James Filla, Vladimir Khromchenko
We report progress towards the goal of reducing the errors in industrial smokestack flow measurements to 1 % by replacing S-probes with calibrated 3-D probes (i.e., probes that measure 3 components of velocity). NIST calibrated a commercially-manufactured

Overview of an Ontology-based Approach for Kit Building Applications

November 8, 2017
Author(s)
Zeid Kootbally, Thomas Kramer, Craig I. Schlenoff, Satyandra K. Gupta
The Agility Performance of Robotic Systems (APRS) project at the National Institute of Standards and Technology (NIST) is using Web Ontology Language (OWL) ontologies for modeling in a robotic kitting workstation. The new technical idea for the APRS
Displaying 3201 - 3225 of 4212
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